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9.3 out of 10

Cyber Power CP550SLG

The CyberPower Standby CP550SLG uninterruptible power supply (UP Read more

Great Deal: $59.99

Reviews and Problems with Cyber Power CP550SLG

Showing 1-10 of 21
Overall 8

Good for Normal Home Use

Anonymous, Newegg
2 March 2014
  • Summary: Bought in 2013Sept. Currently plugged in are small lamp, laptop, 22" TV monitor, 2 cell/tablet.
  • Pros: It beeps when the reserve is turned-on and you unplug it from the wall.
  • Cons: None at the moment.
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Overall 6

Nice unit, unfortunate interface

Jeremy K., Newegg
9 February 2014
  • Summary: The sad thing is, the SW could easily be fixed. Make it so you can run a script BEFORE the shutdown sequence is inevitable (you can delay it, not stop it). Also, is it really that hard to have an English speaking tech editor go through the documentation? The nuances of the English language matter when you are trying to configure it.
  • Pros: The plan was to provide UPS for a little home Linux movie server. It does the job well. My 57 watt draw means 45 minutes of power. The USB interface worked well and the PowerPanel SW worked first time. But trying to configure it...
  • Cons: So, lets talk about configuring the SW. As, I mentioned I run a Linux machine, which makes me the red headed stepchild of the SW support spectrum. But, hey, you could at least have an English speaker proof read the instructions. It took me two hours of tinkering with the auto emailer to make it work. Then I figured out if it sends an alert, it WILL shut down your system; even if power is restored. The Nigerian Prince writing style for the manual and code comments did ...
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Overall 10

Great Peace of Mind

Road Glider, B&H Photo
23 January 2014
  • Excerpt: I bought 2 older versions of this unit five years ago. Both have worked flawlessly during that time, until a couple weeks ago when one of them must have developed an internal short. One side quit providing power. So, I immediately went to B&H and ordered a new one. It was delivered quickly and was simple to set in place of the old one. My computer equipment is expensive and very important to me as a photographer. I wouldn't be without these units.
  • Pros: Easy To Install, Good Value, Reliable
  • Cons: None Noted
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Overall 2

too Low power

Brian H., Newegg
28 November 2013
  • Summary: I have other CyberPower UPS's and they function much better than this unit. I may have gotten a dud but it works to keep a light on in a power outage if its LED.
  • Pros: . small form factor
  • Cons: . inconsistent power output as low as 92 volts. (When it should be stable at 110-120)
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Overall 10

Good UPS

BradNSeattle, B&H Photo
2 November 2013
  • Excerpt: This was purchased as a replacement. This is same as the @ Atvia branded unit which I owned and lasted for 6 years before it died. This unit so far has operated as reliable as my other united. I've also owned APC brand.
  • Pros: Good Value, Reliable
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Overall 8

Pretty good surge protector & battery

Scott B., B&H Photo
5 August 2013
  • Excerpt: Price is about the only "Con" I can think of. But then again this is not a regular surge protector ! This unit has 8 A/C plug-ins, 4 of them say just Surge, the other 4 say Surge/Battery Back-up. Depending on what your protecting, you have up to 45 min. of battery power. This's for my wife's computer and she has a very nice computer set-up and we just had a good size storm come thru and fried the old surge protector. This one is much better than the one it is replacing.
  • Pros: Easy To Install, Highly Compatible, Quiet, Reliable
  • Cons: A Little Heavy, Expensive
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Overall 10

Deployed 25 without one failure

Judy S., Newegg
31 July 2013
  • Summary: The UPS's we had here in the office were either Tripp-Lite or APC. Some of these were beeping for no reason, despite them being less than a year old. When replacing them with new Tripp-Lite units (also 550VA), they would kill power to workstations too often to be just a fluke unit or two. I will not buy Tripp-Lite battery products again.
  • Pros: - Reliable
  • Cons: - No user replaceable battery
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Overall 8

CyberPower Standby CP550SLG 550 VA Desktop UPS

billie789, Overstock
4 December 2012
  • Summary: I'll know if the battery backup actually works when the power goes off. It was easy to install and looked to be well made.
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Overall 10
Value for money 10
Features 10
Performance 10
Overall quality 10

So Far so good

Adam, TigerDirect.com
13 October 2012
  • Summary: I have only had it a week but it works well I haven't had a power outage so don't know how long it will last.
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Overall 10

Great UPS for controlled shutdown

George S., Newegg
26 April 2012
  • Summary: We have had four power outages in the past two years and I also have conducted tests every couple of months. In every case the Cyberpower has communicated perfectly, told the server to execute a normal shutdown, and had more than enough power and as a result, in every case, has executed a controlled and safe shutdown.
  • Pros: Universal compatibility with every Win OS Small Footprint. Greener than larger units (less power draw by the unit itself during normal operation)good price.
  • Cons: None for price point
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